JavaScript
JavaScript While LoopJavaScript While Loop
JavaScript while loops repeat code as long as a condition remains true.
Read Time
5 min readDifficulty
BeginnerLast Updated
Jun 15, 2026Version
v1.0.0Introduction
JavaScript uses the `while` loop when developers don't know exactly how many times the loop should run. It simply checks a condition, runs the code, and checks the condition again.
Example
Example
Key Points
- The loop runs continuously while the condition is true.
- The loop stops instantly when the condition becomes false.
- You must update the condition inside the loop.
- Forgetting to update the condition causes an infinite loop.